Motor-vehicle.



PATENTED SEPT. 18, 1906.

J. A. CARR.

MOTOR VEHICLE. APPLICATION FILED 00125. 1905.

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UNITED STATES PATENT OFFICE.

JOHN A. CARR. OF DENVER, COLORADO, ASSIGNOR OF ONE-HALF TO CHARLES J. KOEHLER, OF DENVER, COLORADO.

MOTOR-VEHICLE.

Specification of Letters Patent.

Patented Sept. 18, 1906.

Original application filed November 22 1904, Serial N 0. 23 3,8 '77. Divided and this application filed October 5, l 905. Serial No. 281,508-

To all whom, it may concern:

Be it known that 1, JOHN A. CARR, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented certain new and useful Improvements in Motor-Vehicles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in automobiles, and more particularly to the driving-gear therefor.

The object in view is the provision of means for facilitating alteration in the speed of the driven parts and the reversal of the driving mechanism while power is being trans- 1rpitlted to both front and rear axles of the ve- With this and further objects in view the invention comprises certain novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a plan view of a vehicle running-gear, parts being broken away and an embodiment of the present improvement being illustrated in connection therewith. Fig. 2 is a transverse vertical section taken on the plane of line 2 2 of Fig. 1 and looking forwardly. Fig. 3 is a fragmentary sectional view taken on the plane of line 3 3 of Fig. 1. Fig. 4 is a detail transverse section-takenon the plane of line 4. 4 of Fig. 1.

This invention refers to that type of devices illustrated and described in my 00- pending application, Serial No. 233,877, filed November 22, 1904, of which this application is a division.

Referring to the drawings by numerals, 1 indicates any ordinary running-gear for a vehicle suitably supported upon the rearaxle 2, and of course upon the front axle 3, the connection with the front axle not being illustrated. Mounted transversely of the said running-gear 1 are supporting-bars 4 4,

the rear axle for driving the same. The shafts 6 are axially alined, as indicated in Fig. 1. Each shaft 6 carries a powerre ceiving disk 7, keyed thereto to slide longitudinally thereof while fixed to rotate therewith. Of course it is obvious that any form of connection other than a key might be employed so long as the result'of permittingthe disk to slide longitudinally of the shaft while preventing rotation of the disk independent of the shaft is accomplished. Each of the disks 7 is formed with a hub or extended bearing 8, and each of said bearings 8 is provided with an annular groove 9, into which projects a pin 10 of a shifting lever 11. Bars 12 12 are fixed to the bars 4 longitudinally of the vehicle, and the respective levers 11 are pivoted to one of the bars 12. The opposite end of one of the levers 11 is pivotally connected with a link 13 and the free end of the otherlever 11 is pivoted to alink 14. The opposite end of link 14 from that engaging lever 11 engages a lever 15 at one side of its pivot 16, said pivot being supported on one of the bars 12, and the other link 13 engages the lever 15 at the other side of its pivot 16. Any suitable rod 17 is connected with the lever 15 and is designed to be moved longitudinally for swinging the lever 15 upon its pivot and causing the levers 11 to approach each other or to move apart, whereby the disks 7 may be caused to simultaneously approach or recede from each other.

Interposed between the disks 7 is a powersupplying pulley 18, which is slidingly mounted on a polysided shaft 19, so as to rotate with said shaft while being free to slide longitudinally thereof. may be keyed upon the shaft instead of being mounted on a polysided shaft, if desired. Suitable bearing-blocks 20 20 are arranged upon the bars 12 12, and the shaft 19 is formed with journals mounted in said journal-boxes, said shaft extending at one side beyond the journal-blocks 20, as at 21, designed to receive power from any suitable powersupplying mechanism. (Not illustrated.) The pulley 18 is provided with an elongated bearing or hub 22, formed with an annular groove 23, engaged by a yoke 24, carried by a standard 25, fixed to a rack-bar 26. Rack bar 26 slidingly incloses a supporting-rod 27, said rod extending transversely beneath the bars 12 and being supported by means of Of course the pulley 18 suitable connecting-brackets 28 28. 29, journaled in any suitable bearings, (not illustrated,) extends from the front of the vehicle to a point beneath the rack 26 and carries a pinion 30, meshing with said rack, so that when the shaft 29 is rotated the said pinion will cause the rack 26 to move longitudinally, and thus shift the pulley 18 transversely across the faces of the disks 7, said pulley 18 being disposed between the disk 7, which latter disks are spaced apart normally a distance slightly greater than the diameter of the pulley 18. The shaft 29 may be extended to any preferred point and provided with suitable apparatus for facilitating rota tion, so that the positioning of the rack 26 may be accomplished readily.

The operation of the present improved structure should be largely obvious and may be carried out as follows: Power being supplied to the shaft 21, causes the rotation thereof and of the pulley 18. To cause the power to be delivered to the axles, it is only necessary to move the rod 17 longitudinally,

ery of pulley 18, and by friction power is transmitted from the pulley 18 to the disks 7 and thence through the shafts 6 to the respective axles. When it is desired to reduce the speed and increase the driving power, the pulley 18 is caused to move toward the periphery of the disks 7, and when the speed is to be increased the pulley 18 is shifted toward the center of the disks 7. desired to reverse the direction of travel of the Vehicle, it-is only necessary to move the pulley 18 from a point, for instance, as seen in full lines in Fig. 2, to a point indicated in dotted lines therein, the movement of the disk 18 past the axis of rotation of the disks 7 causing the said disks to rotate in an opposite direction from their former. rotation while the pulley 18 is being driven continu ously in the same direction.

What I claim is 1. In a device of the class described, the combination with axles and a framing, of axially-alined shafts journaled in said framework and having their ends spaced apart, disks carried by the contiguous ends of said shafts, a power-pulley movably mounted be tween said disks, and means for moving said plisks toward and away from said power-pul- 2. In a device of the class described, the

combination with axles and a framing, of

axially-alined shafts journaled in said framing and geared with said axles for actuating the same, disks carried by said shafts, a

A shaft When it is power-pulley interposed between said disks and movable radially with respect to said disks from one side thereof to the other, and means for moving said disks toward and away from said power-pulley.

3. In a device of the class described, the combination with an axle and framing carried thereby, of a shaft journaled in said framing and geared with said axle, a disk carried by said shaft and movable longitudi,

.nally thereof, a power-pulley mounted contiguous to said disk and movable radially with respect thereto, and means for moving said disk toward said power-pulley.

4. In a device of the class described, the combination with an axle and framing supported thereby, of a shaft journaled in said framing and geared with said axle, a disk carried at the end of said shaft, a power-pulley movably mounted contiguous to said disk, means for moving said power-pulley across the face of said disk from one side to the other, and means for moving said disk toward said pulley. which throws the disks 7 against the periph- 5. In 'a device of the class described, the

combination with an axle and framing supported thereby, of a shaft journaled in said framing, a disk carried by said shaft, a power-pulley movably mounted contiguous to said disk, a rack-bar slidably mounted beneath said power-pulley, a bracket projecting upwardly from said rack-bar and engaging said power-pulley, and means for actuating said rack-bar for moving said power-pulley across the face of said disk.

6. In a device of the class described, the

combination with axles and a framing supported thereby, of axially-alined shafts journaled in said framing and geared with said axles, disks carried by said shafts and spaced apart, a power-pulley interposed between said disks, and means for simultaneously moving said disks toward said power-pulley.

7. In a device of the class described, the combination with an axle and framing supported thereby, of a shaft journaled in said framing, a disk carried by said shaft, a power-pulley movably mounted contiguous to said first-mentioned disk, a rack-bar slidably mounted beneath said power-pulley having the rack-teeth upon its under face, a pinion meshing with said teeth and means for rotating said pinion for shifting said rack. In testimony whereof I affix my signature in presence of two witnesses.

JOHN A. CARR. Witnesses:

CARLE WHITEI-IEAD, Lou. WARNER.

IIO 

